【antd Col】奇怪的TypeError: Cannot read properties of undefined (reading ‘then‘)

现象

修改antd的Col组件的layouts属性为span后，并通过监听resize事件对span列宽进行动态变化时，报错TypeError: Cannot read properties of undefined (reading ‘then‘)。

补充示例一

由于我使用了飞冰ice.js，且在以下过程中写了如下语句，引起了同样的报错！

import { useRequest as useRequestHook } from 'ice';

const { data } = useRequest(
    () => wareHouseModel.data && homeService.getAllFixedAssets(wareHouseModel.data, tenantCode),
    {
      manual: false,
      withFullResult: true,
      refreshDeps: [wareHouseModel.data],
      ready: !!tenantCode,
    },
  );

关键报错代码：

wareHouseModel.data && homeService.getAllFixedAssets(wareHouseModel.data, tenantCode),

正是因为wareHouseModel.data &&的与逻辑引起了该TypeError: Cannot read properties of undefined (reading ‘then‘)报错，因为如果wareHouseModel.data没有值，会导致返回的是非promise的对象！！！

antd引起该错误的代码示例二

const Home = () => {
    const [colSpan, setColSpan] = React.useState<number>(12);
  
	React.useLayoutEffect(() => {
	    // 自适应每屏显示坐标点数量设置
	    const resizeColSpan = () => {
	      const width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
	      let spanNum = 0;
	      if (+width >= 1415 && +width < 1850) {
	        spanNum = 8;
	      }
	      if (+width >= 1850) {
	        spanNum = 6;
	      }
	      setColSpan(spanNum);
	    };
	    // 初始时需要触发resize，否则会有样式兼容问题
	    resizeColSpan();
	    const onResize = debounce(() => {
	      resizeColSpan();
	    }, 50);
	    window.addEventListener('resize', onResize);
	    return () => {
	      window.removeEventListener('resize', onResize);
	    };
	  }, []);
// ...以下省略部分内容

return (
          {/*  */}
            <Col span={colSpan} className={`${styles['panel-item']} panel-item`}>
            {React.isValidElement(children) &&
              React.cloneElement(children as React.ReactElement, {
                onClick: (actionKey) => handleClick(actionKey, item),
                hasRemoved: panelList.length >= 3,
              })}
          </Col>
        );

报错原因

由于上面的代码给了一个let spanNum = 0;，默认给0的情况会引起获取不到元素的报错。将其赋值为let spanNum = 12;即可。